JP4605934B2 - Recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording ribbon take-up mechanism, in particular a black ink layer for performing recording on a long recording surface of a recording medium, it records the protective layer to the surface sequentially formed to perform a protective film formation on the short recording surface The present invention relates to a recording apparatus including a recording ribbon winding mechanism for performing thermal transfer recording or thermal sublimation recording using a ribbon.
[0002]
[Prior art]
Conventionally, for example, when issuing various certificate cards with a color photo printed in part as a recording medium, dedicated for thermal transfer recording or thermal sublimation recording while winding a recording ribbon supplied from a supply spool with a take-up spool A recording device is in use. According to this dedicated recording apparatus, the recording ribbon used for printing a color face photograph has three primary colors, yellow (Y), magenta (M), and cyan (C), which are formed in the surface sequence. On the other hand, in order to perform black (BK) recording on a recording surface that is substantially the entire surface, recording is performed using a recording ribbon on which a black ink layer is formed.
[0003]
[Problems to be solved by the invention]
On the other hand, it is necessary to record a protective layer (P) for forming a transparent protective film by heat treatment in addition to the above YMC color layers in order to protect the above color face photograph. Therefore, in order to increase the speed of this process, there is a demand for a YMC unit and a PBK unit to be configured in series so that the processing time per sheet is about 22 seconds.
[0004]
In order to meet this requirement, the three primary colors of yellow (Y), magenta (M), and cyan (C) are sequentially layered as shown in the relative relationship diagram between the card body 4 and the recording ribbon in FIG. Using the formed first recording ribbon 1 and the second recording ribbon 2 provided with the P layer and the BK layer, the color face photograph of the card body 4 and the character symbols shown by hatching are printed. .
[0005]
That is, the first recording ribbon 1 is set such that the size of each of the Y, M, and C color layers substantially matches the size of the face photograph, and the upper right sense mark 3 is detected. In order to print the cue and print, the width P of the card body 4 is set in order to record the P layer for protecting the photograph of the face after printing and the black BK layer for printing over the entire surface of the card body 4. It is necessary to perform protective film formation and printing using the second recording ribbon 2 on which the substantially identical BK layer is formed.
[0006]
Therefore, at the time of printing each color layer of Y, M, and C, the first recording ribbon 1 is not wound, and is wound only at the next cueing feed, while the P layer and the BK layer. During printing, it is necessary to wind up at a constant tension while energizing the thermal head and moving the card body from the transfer conditions and the structure of the apparatus.
[0007]
Therefore, it is conceivable to use a commercially available felt-type torque limiter to wind with a constant tension (tension), while rotating the DC motor in a steady manner and sliding the torque limiter.
[0008]
However, with this configuration, when detecting the sense mark 3 and cueing each layer of the P layer and the BK layer, the ribbon cannot be normally wound because of the torque limiter. Specifically, if winding is performed at the same time as printing, the winding of the ribbon is assisted by the feeding force of the card body 4 so that winding is possible, so that each of the Y, M, and C color layers There is no particular problem when printing. In other words, the YMC unit does not require winding during printing, so a torque limiter is not required, and the winding is always performed by driving the winding spool for the next color cueing.
[0009]
However, since the torque limiter must be set to a torque suitable for printing, it cannot be set to a strength capable of being wound. For this reason, in order to perform the recording of the P layer and the BK layer on the next card body, the torque limiter does not operate even if only the recording ribbon is taken up when cueing the second recording ribbon 2. It will work and will not be able to wind.
[0010]
Therefore, the present invention has been made in view of the above problems, and a black ink layer for recording on a long recording surface along the conveyance direction of the recording medium and a protective film formation on a short recording surface are provided. It is an object of the present invention to provide a recording ribbon winding mechanism that can normally wind up when recording is performed using a recording ribbon in which a protective layer to be formed is formed in a surface sequential manner.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve the object, according to the present invention, a recording ribbon winding used for thermal transfer recording or thermal sublimation recording while winding a recording ribbon supplied from a supply spool with a winding spool. a recording apparatus comprising a mechanism taken, the protection of the recording ribbon, a black ink layer for performing recording on a long recording surface along the conveyance direction of the recording medium conveyed in forward and reverse directions, the short recording surface A first torque limiter that forms a protective layer for forming a film so as to be surface-sequential and controls rotation of the supply spool to generate tension on the recording ribbon supplied from the supply spool; , wound up to the winding force when when winding the take-up spool during a recording operation by subtracting the winding force winds to the recording start position of the protective layer and the black ink layer And a take-up means for taking said winding means includes a directly coupled state which is directly connected with the take-up spool drive motor for winding by the maximum winding force, from said driving motor to said take-up spool The electromagnetic clutch for switching to the indirect state which transmits the motive power of the said drive motor via the 2nd torque limiter which controls transmission torque is provided .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
[0014]
FIG. 2 is a front view showing an example in which the recording ribbon winding mechanism of the present invention is applied to a card body printing apparatus, and the end of the first recording ribbon 1 (shown by a two-dot chain line) shown in FIG. Is fixed to the supply spool 7 and wound, and the other end of the first recording ribbon 1 is fixed to and wound on the take-up spool 8, and the ribbon cassette 5 is rotatably supported on the YMC unit side. On the other hand, the end of the second recording ribbon 2 (shown by a two-dot chain line) is fixed to the supply spool 7 and wound, and the other end of the second recording ribbon 2 is fixed to the take-up spool 8. A state is shown in which the ribbon cassette 5 that is rotatably wound and supported on the ribbon cassette 5 is set on the PBK unit side.
[0015]
In this way, the first recording ribbon 1 and the second recording ribbon 2 are individually incorporated in the ribbon cassettes 5 and 5 so that they can be exchanged in units of ribbon cassettes, and set at the illustrated loading position. The supply spool 7 and the take-up spool 8 are automatically engaged with the ribbon mechanism. The ribbon cassettes 5 and 5 are formed with holes through which the sensors 6 and 6 for optically detecting the sense mark 3 are inserted at the illustrated positions. Cue each layer.
[0016]
On the base 11 of the YMC unit and the PBK unit, a drive unit (not shown) that drives the thermal head 10 in the direction of the arrow K and a heat generation unit of the thermal head 10 are rotatably disposed at the base 11. Platen rollers 12 and 12 are provided. The arm member 15 provided so as to be rotatable around the shaft body of the drive roller 13 that moves the card body 4 in the direction of arrow D is provided with a drive roller 14, and an electromagnetic solenoid fixed to the base 11. As the energization is applied to 16, the suction force is transmitted to the arm member 15 via the link 17 to move the drive roller 14 in the direction of arrow T, and the drive roller 14 is driven by a drive motor (not shown) to thereby generate a card It is comprised so that it may be in the state which conveys the body 4 in the forward / reverse direction.
[0017]
Next, in FIG. 3, which is a cross-sectional view taken along line X-X in FIG. 2, the same reference numerals are given to the components already described, and the description is omitted, and the ribbon cassette 5 is loaded into the PBK unit. Thus, the supply spool 7 and the take-up spool 8 indicated by broken lines are maintained in a state of being engaged with the core members 21 and 21 so that the rotational force of the core member can be transmitted to the respective spools. In order to be automatically in this engaged state, the core member 21 is provided so as to be rotatable around a fixed shaft body 20 (partially shown by a broken line) fixed to the base 11 in a single-supported state, and compressed. The coil spring 22 is constantly urged to move toward each spool, and is configured to engage with a groove formed on the outer peripheral surface of the bush member 21b to which the gear 21a is fixed. The convex portion of the core member enters and engages with the groove formed in the take-up spool 8 so that the rotational force transmitted to the gear 21 a can be transmitted to the core member 21.
[0018]
The gear 21 a of the core member 21 that engages with the supply spool 7 meshes with a gear 24 that is fixed to one end of a rotary shaft 23 that is pivotally supported at the base 11, and is fixed to the rotary shaft 23. The torque of the torque limiter 25 that fixes the gear meshing with the gear is transmitted to the core member 21 so that appropriate back tension (tension) can be generated during winding and recording. The encoder 26 can detect the rotation amount of the rotary shaft body 23.
[0019]
The gear 21a of the core member 21 that engages with the take-up spool 8 is fixed to one end of a rotary shaft 30 that is supported by a bearing (not shown) between the base 11 and the sub base 11a. Are engaged. A large gear 47 with an engagement hole is fixed to a substantially central portion of the rotating shaft 30, and the small gear 40 is engaged with the large gear 47 with an engagement hole. The small gear 40 is fixed to a rotating shaft body 39 supported by a bearing (not shown) between the base portion 11 and the sub base portion 11b, and a large gear 38 is fixed to the rotating shaft body 39. . The large gear 38 meshes with a small gear 37 fixed to a rotating shaft body 36 (shown by a broken line) that is rotatably supported at the base 11, and a worm wheel 35 is further connected to the rotating shaft body 36. It is fixed. The worm wheel 35 meshes with a worm gear 34 fixed to the output shaft of the DC motor 33.
[0020]
With the above configuration, when the DC motor 33 is energized, the core member 21 that engages with the take-up spool 8 by driving power through each gear is driven in the take-up direction.
[0021]
On the other hand, around the outer periphery of the rotating shaft 30, there is further provided an electromagnetic clutch 50 for attracting and moving the clutch disk 48 provided on the large gear 47 with the engagement hole, and a torque limiter 45 provided with the engagement member 46. Is provided. That is, the electromagnetic clutch 50 and the torque limiter 45 are coaxially arranged and connected. A gear 51 for driving an encoder (not shown) is further fixed to the rotating shaft 30.
[0022]
The DC motor 33, the electromagnetic clutch 50, and the sensor 6 are connected to the control device 100 and perform drive control described later.
[0023]
FIG. 4 is a cross-sectional view of the main part for explaining the operation of the electromagnetic clutch 50 provided in the rotary shaft 30 of FIG.
[0024]
In this figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted. The large gear 47 with an engagement hole is formed with a hole 47a into which the convex portion of the engagement member 46 enters. When the electromagnetic clutch 50 is energized off and the large gear 47 with the engagement hole is positioned at the position indicated by the solid line, the power reduced by the torque by the torque limiter 45 is engaged with the small gear 40. Is transmitted to the rotary shaft 30 to drive the gear 31.
[0025]
When the electromagnetic clutch 50 is energized, the clutch disc 48 is attracted and the large gear 47 with the engagement hole is located at the position indicated by the broken line and meshes with the small gear 40. The transmission of power from the DC motor 33 is transmitted to the rotary shaft body 30 without being affected by the above, and the gear 31 is driven.
[0026]
FIG. 5 is a diagram showing power transmission with the energization-off state of the electromagnetic clutch 50 indicated by an arrow. Since power transmission to the core member 21 is performed via the torque limiter 45 as shown in FIG. A rotational force of 70% is transmitted.
[0027]
FIG. 6 is a diagram showing the power transmission when the electromagnetic clutch 50 is energized with arrows. As shown in the figure, the power transmission to the core member 21 is performed directly without passing through the torque limiter 45. Therefore, about 100% of rotational force is transmitted.
[0028]
Finally, FIG. 7 is an operation comparison diagram of the recording ribbon take-up mechanism having the above-described configuration, in which the card body is moved and other operation states, the electromagnetic clutch 50 is energized, the DC motor 33 is energized, The operation state of the core member 21 on the winding side is shown correspondingly.
[0029]
In this figure, since the electromagnetic clutch 50 is turned off particularly during the recording operation of the P layer and the BK layer, the output from the DC motor 33 is transmitted to the torque limiter 45 through the large gear 47 with the engagement hole. After the torque is reduced and adjusted, it is transmitted to the rotary shaft 30 and transmitted to the core member 21 for winding.
[0030]
When the next color is cued, the electromagnetic clutch 50 is turned on, so that the output of the DC motor 33 is directly transmitted to the rotary shaft body 30 without passing through the sliding path of the torque limiter 45 to rotate the core member 21 for winding. To be able to.
[0031]
As described above, since the energization to the electromagnetic clutch is switched, the winding timing is ensured, and the torque setting and the rotation speed are constant, so that stable winding is possible. Furthermore, since the electromagnetic clutch and the torque limiter are arranged on the same axis, the narrow space at the rear of the printer can be used effectively.
[0032]
The present invention is not limited to the above-described configuration, and as a method of switching the winding torque, a method of switching with a planetary gear (a gear sequence without slipping in motor forward rotation, a gear sequence in which a torque limiter works in reverse rotation), A method for obtaining strong and weak torque by current control (PWW control) of the DC motor 33. When the duty ratio is low, it is wound weakly, and when it is high, it is wound strongly. Using a clutch mechanism, direct winding / torque as required There is a way to switch the limiter winding.
[0034]
【The invention's effect】
As described above, according to the present invention, a black ink layer for performing recording on the long recording surface along the conveyance direction of the recording medium, and a protective layer for forming a protective film on the short recording surface area sequential When recording is performed using the recording ribbon formed on the recording apparatus, it is possible to provide a recording apparatus including a recording ribbon winding mechanism that can be normally wound.
[Brief description of the drawings]
FIG. 1 is a relative view of a card body 4 and a recording ribbon.
FIG. 2 is a front view showing an example in which the recording ribbon winding mechanism of the present invention is applied to a card body printing apparatus.
3 is a cross-sectional view taken along line XX in FIG.
4 is a cross-sectional view of a main part for explaining the operation of an electromagnetic clutch 50 provided on the rotary shaft body 30 of FIG. 3;
FIG. 5 is a diagram showing power transmission with arrows when the electromagnetic clutch 50 is turned off.
FIG. 6 is a diagram showing power transmission with arrows when the electromagnetic clutch 50 is energized.
FIG. 7 is an operation comparison diagram of the recording ribbon take-up mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st recording ribbon 2 2nd recording ribbon 3 Sense mark 4 Card body (recording medium)
5 Ribbon Cassette 7 Supply Spool 8 Take-up Spool 10 Thermal Head 11 Base 12 Platen Roller 20 Fixed Shaft 21 Core Member 22 Compression Coil Spring 23 Rotary Shaft 30 Rotary Shaft 31 Gear 33 DC Motor 34 Warm Gear 35 Warm Wheel 36 Rotary Shaft 37 Small gear 38 Large gear 39 Rotating shaft 40 Small gear 45 Torque limiter 47 Large gear 50 with engagement hole Electromagnetic clutch

Claims (1)

A recording apparatus comprising a recording ribbon winding mechanism used for thermal transfer recording or thermal sublimation recording while winding a recording ribbon supplied from a supply spool with a winding spool,
Said recording ribbon, a black ink layer for performing recording on a long recording surface along the conveyance direction of the recording medium conveyed in forward and reverse directions, and a protective layer for forming a protective film on the short recording surface area sequential While forming to become,
A first torque limiter that regulates rotation of the supply spool to generate tension on the recording ribbon supplied from the supply spool;
Winding means that reduces the winding force when winding the winding spool during a recording operation and winds up to the recording start position of the black ink layer and the protective layer with the maximum winding force. ,
The winding means includes a direct coupling state in which the winding spool is directly coupled to wind the winding spool with the maximum winding force, and a second torque limiter that regulates transmission torque from the driving motor to the winding spool. A recording apparatus comprising: an electromagnetic clutch for switching to an indirect state in which the power of the drive motor is transmitted via a drive .

Images